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Hello,

here are a few sentences with some alternative ways of saying.

1. Within the next generation many things which are debated in scientific circles today will have become everyday issues.

How about: During the next generation... ?

2. My hairdresser claimed her new gizmo could identify the tiny variations in my hair colour.

How about: ... recognise the tiny variations...?

3. Each of the new houses were identical boxes without any real character.

How about: Every one of the new houses...

Do you find the alternatives phrases acceptable?

Thank you for the answers!
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successor1. Within the next generation many things which are debated in scientific circles today will have become everyday issues.
How about: During the next generation... ?
You could use that, but within and in are probably better.
successor2. My hairdresser claimed her new gizmo could identify the tiny variations in my hair colour.
How about: ... recognise the tiny variations...?
Fine.
successor3. Each of the new houses were identical boxes without any real character.
How about: Every one of the new houses...
The substitution is OK, but the agreement is wrong. Each ... was; Every one ... was. You need something more like this:

[Each / Every one] of the new houses was a box identical to the others and without any real character.

CJ
Comments  
successor1. Within the next generation many things which are debated in scientific circles today will have become everyday issues.
How about: During the next generation... ?
Simple "in the next generation" will suffice. Actually, I find it strange because the boundaries of generations are blurred.
2. My hairdresser claimed her new gizmo could identify the tiny variations in my hair colour.
How about: ... recognise the tiny variations...? Both are acceptable.

3. Each of the new houses was an identical box without any real character.
How about: Every one of the new houses... Both are fine.

 CalifJim's reply was promoted to an answer.